Jetting type centrifugal pump with separation mesh for enhancing self sucking

Abstract

The invention discloses a jetting type centrifugal pump with a separation mesh for enhancing self sucking. The jetting type centrifugal pump with the separation mesh for enhancing self sucking comprises a jetting type centrifugal pump body and the separation mesh; the separation mesh is arranged in a gas-liquid separation chamber and located between an inlet of a backflow flow channel and an outlet of a centrifugal vortex chamber; at a certain relative spatial attitude and a certain flow intercepting area, gas-liquid two phase flow flowing back to the inlet of the backflow flow channel from the interior of the gas-liquid separation chamber is subjected to effective gas-liquid separation; meanwhile, the separation mesh is used for rectifying fluid, with very high kinetic energy, jetted outof an original centrifugal outlet in the gas-liquid separation chamber; and speed reducing and pressurizing are performed, the pressure potential energy of the backflow fluid and the overall uniformity of flowing in the separation chamber are improved, the gas containing rate of the backflow fluid flowing back to a nozzle of a jetting device through the backflow flow channel is remarkably reduced,the speeds of gas-liquid mixing and gas-liquid separation are increased at the same time, and the self-sucking capacity of the jetting type self-sucking centrifugal pump body is remarkably improved.

Description

technical field [0001] The invention relates to a jet type centrifugal pump, in particular to a jet type centrifugal pump with a separating net to enhance self-priming, which belongs to the field of fluid machinery. Background technique [0002] The pump is a general-purpose machine with a large volume and wide area and huge energy consumption. There are pumps working almost wherever there is liquid flow. According to the statistics of China General Machinery Association, in recent years, the average annual output value of the national pump industry has exceeded 100 billion yuan, and the power consumption of water pumps accounts for about 20% of the national power consumption. At present, the low-noise self-priming compound pump (application number: 201610813048.3; application publication number CN 106224249 A) ​​that has been disclosed in a wide variety of small land pump products is a new type of low-noise, high-efficiency, and energy-saving pump product. That is, a new t...

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Problems solved by technology

[0004] Aiming at the shortcomings of low-noise self-priming composite pumps, such as unstable self-priming ability and poor consistency of self-priming speed, the present invention proposes a jet-type centrifugal pump with separation net to enhance self-priming speed and self-priming height, and improve self-priming stability

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